Delete a file or folder that cannot be deleted

Download Unlocker

and use it to delete the folder / file.

Free space on windows partition - Disable Hiberfil.sys and change virtual memory partition

1. Run cccleaner and free temporary files.
You can access temp folder by : %temp% manually

2. Disable Hiberfil.sys - around 4gb of space
Easiest mother open a cmd with administrator rights and type :
powercfg.exe -h off
powercfg.exe /hibernate off

3. Move Virtual Memory to other partition :
Open System Properties - Advanced -> In Performance section select - Settings - Advanced -> Virtual Memory - Change - Set to No paging file on windows partition and the select other partition and set it to System Managed size

Login locally to windows on a domain computer without typing computer name

To login to a computer that is in a domain and you want to log in locally instead of typing :
coputername\user
type :
.\
and it will show the computer name, then :
.\username

Customize windows start - replace explorer

Open regedit and navigate to :
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

Change shell attribute to nothing or your program.

3G mobile phone and Wifi N speed

3G + HSPA = Teoretical speed 7.2 MBs , real speed around 5.9Mbs

3G DIGI RDS SpeedTest

4G - Teoretical  speed of 150 Mbs

Digi RDS - LTE 4G 2600 MHz (TDD – canal 38)

WiFi speed test on N with a 150M Wireless Lite N RouterTL-WR740N and a ALLView A5 Smiley phone

Install windows from a network location

First create a win pe image and either set up a pxe boot server or just boot from dvd or usb.

You will end up with a cmd prompt :
X:\windows\system32\>wpeinit

Map the location where you have the windows image :

net use n: \\networkpc\sharename passwords /user:username
cd n:\windows7
setup.exe

If you run into an error "autorun.dll" could not be loaded or is corrupt setup can not continue error code (0xC1). This means your version of WinPE is mismatched with your Windows ISO. Type ver at the WinPE prompt.

|   ver    | Win PE Version | Matching Windows ISO | 
----------------------------------------------------
| 6.0.6*** |     2.*        |    Windows Vista     |
| 6.1.7600 |     3.0        |      Windows 7       |
| 6.1.7601 |     3.1        |    Windows 7 SP1     |
| 6.2.9200 |     4.0        |      Windows 8       |
| 6.3.9600 |     5.0        |     Windows 8.1      |

Windows cmd commands

1. Remove folder with all content :
   rd /s /q       - faster and better then explorer for erasing large amount of files
2. Change file/folder attributes
   attrib +shr -shr filename/folders - system file
   h - hidden file
   r - read only file
3. View all files/folders including hidden/system etc
   dir /a
   dir /a:h   - display only hidden files
4. View windows install date :
   systeminfo | find "Install Date"
5. Force date and time sync
   net start w32time
   w32tm /resync /force
6. Set date or time :
   date 04-15-2015
   
   

Open CMD while installing windows

To get access to a command prompt with a windows cd/dvd 
Press SHIFT+F10

Activate numlock on a tablet that does not have numlock button

Open notepad :

set WshShell = CreateObject("wScript.Shell")
WshShell.SendKeys "{NUMLOCK}"

and save as numlock.vbs

Run

Run an aplication or command on a remote computer

To install an application copy the setup file and then open a cmd and type :

wmic /node:computername /user:username /password:mypassword product call install true, "","\\computername\Users\Public\a.msi"

wmic /node:computername baseboard get product,manufacturer

wmic /node:computername ...

To run a cmd app with admin rights type in cmd :
runas /user:username cmd
 

How to check mssql version installed + install option

Open a cmd and type :

sqlcmd
select @@version
go
exit

Default instance is that you connect just by specifying the server name (eg, MYSERVER), whereas a named instance will require an instance name as well (eg, MYSERVER\SQL2005).

Clients can connect to the default instance using only the host name over the well-known 1433 port.
To connect to a named instance, clients specify the host and instance name (e.g. "MyHost\My_Instance") and the SQL Server Browser service returns the port the named instance is listening on.

How to view motherboard name in windows

After installing a system if you don't know the mb manufacturer and/or model so you can install drivers - without any 3rd party software you can use :

Win+R => type :
msinfo32
dxdiag

sometimes these provide the information sometimes they dont.

In those cases run in cmd :
wmic baseboard get product,Manufacturer,version,serialnumber

or just

wmic baseboard get product,Manufacturer

or to get all data :

wmic baseboard list full /format:hform > %temp%\a.html
start %temp%\a.html


http://www.pearsonitcertification.com/articles/article.aspx?p=1700427&seqNum=4
wmic output customisation

Format SD card - USB stick with FAT32 vs NTFS

NTFS has over fat32 the following :

- supports files bigger then 4GB and capacity over 2TB
- is a journaling file system where changes to files are logged to a jurnal before there are mode ( good in case of a power loss while writing, it wont need to scan all disk)
- support file permissions with user ID, read only etc

Advantages of FAT32 is that no journaling means less writes to the disk so longer life, no file permissions that cause problems when moving the media from one device to another


Allocation unit while formatting :
- smaller size better for space efficiency - if you have many small size files. Ex a 10kb file will need 5 2kb blocks if you chose 2kb allocation unit and when reading will require 5 blocks to be read.
- bigger size for better performance - it will read the data faster, but it will waste space on smaller files - but unnoticeable on larger size disks.

Windows cannot connect to the printer" - Operation Failed with error 0x00000002

First time try to restart the Printer spool service - and that might fix it.
If that fix it but next reboot  you printer does not work create a file restart_print_spool.bat and copy it in  %USERPROFILE%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup
and write in it :
sc stop "Spooler"
sc start "Spooler"

When you try to add a shared network printer you receive :
Windows cannot connect to the printer" - Operation Failed with error 0x00000002

Open : Control Panel\Hardware and Sound\Devices and Printers - press Add Printer

Select Create a new port - Type of port - Local Port - and type \\network_location\shared_printer_name

Next select printer manufacturer and printer model - provide driver and next until finish.

HP servers raid config ORCA raid 1 level

In hp servers raid utility ORCA (Option ROM Configuration for Arrays) - press F8 to enter configuration - to createa a RAID 1 mirroring you have to select RAID 1+0

 HP Array Configuration Utility User Guide : pg 64
http://www.hp.com/ctg/Manual/c00709035.pdf 

In a RAID 1+0 configuration, data is duplicated to a second drive

They don't make no differentiation between RAID 1 and RAID 1+0 - it depends on how many HDDs you select.